BQ24725A
- SMBus Host-controlled NMOS-NMOS synchronous buck converter with programmable 615kHz, 750kHz, and 885kHz switching frequencies
- Automatic N-channel MOSFET selection of system power source from adapter or battery driven by internal charge pumps
- Enhanced safety features for over voltage protection, over current protection, battery, inductor and MOSFET short circuit protection
- Programmable input current, charge voltage, charge current limits
- ±0.5% Charge voltage accuracy up to 19.2V
- ±3% Charge current accuracy up to 8.128A
- ±3% Input current accuracy up to 8.064A
- ±2% 20x Adapter current or charge current amplifier output accuracy
- Programmable battery depletion threshold, and battery LEARN function
- Programmable adapter detection and indicator
- Integrated soft start
- Integrated loop compensation
- Real time system control on ILIM pin to limit charge current
- AC Adapter operating range 4.5V-24V
- 5µA Off-state battery discharge current
- 0.65mA (0.8mA max) Adapter standby quiescent current
- 20-pin 3.5 x 3.5 mm2 VQFN Package
The BQ24725A is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.
The BQ24725A utilizes two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.
SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.
The BQ24725A uses internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.
The BQ24725A charges one, two, three or four series Li+ cells.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | BQ24725A SMBus 1- to 4-Cell Li+ Buck Battery Charge Controller with N-Channel Power MOSFET Selector datasheet (Rev. C) | PDF | HTML | 2019/10/02 |
Application note | Autonomous Smart Battery Guide | PDF | HTML | 2021/10/15 | |
Technical article | Using battery charger ICs to shrink your design for vacuum robots | PDF | HTML | 2018/03/21 | |
Application note | How to Review a Multicell Switching Charger Schematic | 2011/09/21 | ||
User guide | bq24735/725A Battery Charger Evaluation Module (Rev. A) | 2011/08/16 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
BQ24725AEVM-710 — BQ24725A 1-4 셀 Li+ 배터리 SMBus 충전 컨트롤러용 평가 모듈
The BQ24725AEVM-710 evaluation module (EVM) is a complete charger module for evaluating a multicell synchronous notebook turbo boost charge using the bq24725A device. It is designed to deliver up to 4 A of charge current to Li-ion or Li-polymer applications. The charge current is programmable by (...)
TI-CHARGER-GUI — USB2ANY 및 배터리 충전 평가 모듈과 함께 사용하기 위한 GUI 소프트웨어
SLUC203 — bq24725_725A_726_707_73x Calculation Tool
지원되는 제품 및 하드웨어
제품
배터리 충전기 IC
PMP21618 — 12V 납산 배터리 충전기를 위한 범용 입력 레퍼런스 설계
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
VQFN (RGR) | 20 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.